TeX Quellcode:

z_1 \cdot z_2=\dfrac{1}{2}e^{i\,\frac{5\pi}{4}}\cdot 10e^{i\,\frac{\pi}{6}}=\dfrac{1}{2}\cdot 10e^{i\,\frac{5\pi}{4}+i\,\frac{\pi}{6}}=5e^{i\,\frac{17\pi}{12}}